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on 22/3/02 1:08 AM, Nagy T. János at nagyj@ps*.co* wrote:

> In my opinion GUE standards are not so flexible.

SNIP

> Dive plan 
> 
> 50m 20min. 20min. EAN25
> 21m   2min. 22min. EAN25
> 21m   1min. 23min. EAN50 gas-switch
> 12m   1min. 24min. EAN50 marker boyl
> 09m   3min. 27min. EAN50
> 06m   6min. 33min. EAN50
> 03m 16min. 49min. EAN50

I think you could really use the 'inflexible' GUE standards on standard
mixes for a start. 

Could you explain the logic in taking a hyperoxic backgas to 50m let alone
the idea of bothering to mix a 25 in the first place (since it's so close to
air).  The END of that gas is 47m which in narcotic terms is just the same
as 50m. Yet you pumped the P02 by 20% to redline it at 1.5 .... why do that
to yourself ?

O2 is definitely NOT the right gas to be displacing N2 at depth, that is
what He is for. Especially at 50m.

Perhaps you'd like to review the recent deco discussions in the archives or
read the articles at http://www.wkpp.org/decompression.htm

Absent actual GUE training, I would suggest that you download the PDF file
of 'Getting Clear on the Basics - The Fundamentals of Technical Diving' from
http://www.gue.com/classroom/manuals.shtml  that will give you a lot of
important info right away, that you may not have covered in your training up
to this point.

I think you may benefit greatly from a GUE course if there is any going in
your area.


Safe Diving


dean laffan
real world productions
melbourne, australia
ph +613-9419-3966
Mobile 0418-525-315
-- 

Heureux vos corps fondus, Eaux planes et prondes

 - Paul Valery

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